Feed-water heater and purifier



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W. WEBSTER. FEED WATER'HEATBR AND PURIFIER.

No. 524,152. Patented Aug 7, 1894.

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PATENT OFFICE.

WARREN WEBSTER, OF MEROHANTVILLE, NEW JERSEY.

FEED-WATER HEATER AND PuRlF lER.

SPECIFICATION forming part of Letters Patent No. 524,152, dated August Application filed August 15, 1892.

To all whom it may concern:

1 3e it known that I, WARREN WEBSTER, a cltlzen of the United States, residing at Merchantville, in the county of Oamden,State of New Jersey, have invented a new and useful Improvement in Feed-Water Heaters and Purifiers, which improvement is fully set forth in the following specification and accompanying drawings.

I have found thatin the class of feed water heaters and purifiers, at certain times when the supply of steam is limited and insufficient 1n volume to heat the infiowing water to the hlghest temperature, the air which is expelled from the water accumulates in the top of the heating and purifying chamber, and renders the device inoperative until said air is removed, thus requiring a pressure of steam to enter said chamber at intervals at a pressure 1n excess of that of the atmosphere, so as to el pel the air through the overflow or relief pipe, and thus make room for the steam. In order to obviate the necessity of requiring steam to enter at a pressure in excess of that of the atmosphere, and to get rid of the airas rapidly as it is liberated from the water, together with being able to use steam at a pressme less than that of the atmosphere by maintaming a partial vacuum within the feed water heater, I employ a suitable suction creating or air withdrawing device, which is adapted to be positive in itsaction, and capable of being operated at will, independently of any other discharging pipe, said device connecting with a pipe communicating with the inside of the chamber above the water line, so as to obtain the amount of suction necessary to Withdraw r the air and maintain a partial vacuum within the heater if desired, thereby insuring the best results in heating feed water for steam boilers, and manufacturing purposes.

Figure 1 represents a partial side elevation and a partial vertical section of a feed water heater and purifier embodying myinvention. Fig. 2 represents a side elevation at a right angle to Fig. 1. Fig. 3 represents a modification of the air exhausting device.

Similar letters of reference indicate corresponding parts in the several figures.

Referring to the drawings: A designates a 7, 18 94. $erial No. 443,124. (No model.)

feed water heater and purifier consisting of the chamber B with the water supply 0, the steam inlet D, the outboard water delivery pipe E, the spraying device F, the metal distributin'g plates G, the condensing tubes H and gravity regulator J.

Connected with the chamber B, and communicatin g with the interior thereof, is an air pipe K, having an automatic air inlet valve K. To the said pipe is attached asuction exhaust or vacuum-creating device, which latter isof the form of air injector as at L in :Fig. 1, or a pump as at M in Fig 3, the result beingsimilar in either case, in that the air is withdrawn from the chamberB and the heater and purifier is thereby adapted to work effectively as hereinbefore stated.

In a' prior patent granted to me May 31, 1892, No. 475,992, I have therein shown and claimed the combination of a portion of a compound engine with a feed water heater, said heater and its connections to the engine being provided with valves of a peculiar construction. In another patent granted to me October 2, 1888, No. 390,538, I show and claim a feed water heater having suitable inlets and outlets for water and steam, but no separate and independent suction creating device is provided distinct from any other discharging pipe, whereby the air within the heater can be positively and independently-withdrawn, and a partial vacuum maintained therein wheneverdesired. This latter feature comprises the subject matter of the present application, and to the constructions disclosed and claimed in my prior patents I herein make no claim.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is v 1. A feed water heater and purifier constructed substantially as described,having an air pipe communicating with the interior thereof, and an air exhaust device separate and independent of any otherdischarge pipe attached to said air pipe as set forth for the purpose stated.

2. In a feed water heater and purifier, means for directing water thereinto in the form of spray, in combination with an air inlet pipe said device being separate and independent of any other discharge pipe communicating with the interior of said heater and purifier, and an air exhaust-device attached to said pipe, substantially as stated.

3. A feed water heater having a vacuum chamber, a steam inlet pipe, a water inlet pipe, and a pipe in communication with said vacuum chamber having an airinlet valve, and

an air exhaust device connected therewith, said exhaust device being separate and indero pendent of any other discharge pipe said parts being combined substantially as described.

WARREN WEBSTER.

Witnesses: I

JOHN A. W IEDERSHEIM, A. P. JENNINGS. 

